Formally condemned by the Catholic Church, Gaudium et Spes,(Constitution on the Church in the Modern World) Para 80:

"With these truths in mind, this most holy synod makes its own the condemnations of total war already pronounced by recent popes, and issues the following declaration:

"Any act of war aimed indiscriminately at the destruction of entire cities of extensive areas along with their population is a crime against God and man himself. It merits unequivocal and unhesitating condemnation."

The Council condemned city = target bombing in the same terms that it condemned abortion and infanticide, and for the same reason: because they are the direct, deliberate destruction of innocent human life, and thus are an abomination in the eyes of God.